/*
 * SonarQube
 * Copyright (C) 2009-2021 SonarSource SA
 * mailto:info AT sonarsource DOT com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package org.sonar.server.measure.live;

import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import org.sonar.api.measures.Metric;
import org.sonar.api.server.ServerSide;

@ServerSide
public interface IssueMetricFormulaFactory {
  List<IssueMetricFormula> getFormulas();

  Set<Metric> getFormulaMetrics();

  static Set<Metric> extractMetrics(List<IssueMetricFormula> formulas) {
    return formulas.stream()
      .flatMap(f -> Stream.concat(Stream.of(f.getMetric()), f.getDependentMetrics().stream()))
      .collect(Collectors.toSet());
  }
}
